In a potentiometer setup, if the wire is made of a material with higher resistiv

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Question: In a potentiometer setup, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?

Options:

Correct Answer: It decreases

Solution:

Higher resistivity increases the resistance of the wire, which can decrease the potential gradient for a given voltage.

In a potentiometer setup, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?

In a potentiometer setup, if the wire is made of a material with higher resistivity, what will be the effect on the potential gradient?

Correct Answer: Potential gradient decreases.

Step 1: Understand what resistivity means. It is a property of a material that affects how easily electricity can flow through it.
Step 2: Know that a wire with higher resistivity will have higher resistance when the length and cross-sectional area are the same.
Step 3: Remember that in a potentiometer, the potential gradient is the change in voltage per unit length of the wire.
Step 4: Realize that if the resistance of the wire increases (due to higher resistivity), it can affect how much voltage is dropped across the wire.
Step 5: Conclude that for a given total voltage applied across the wire, a higher resistance (from higher resistivity) will lead to a lower potential gradient.

Potential Gradient – The potential gradient in a potentiometer is defined as the change in potential per unit length of the wire.
Resistivity and Resistance – Resistivity is a material property that affects the resistance of a wire; higher resistivity leads to higher resistance.
Ohm's Law – Ohm's Law relates voltage, current, and resistance, indicating that for a constant voltage, an increase in resistance results in a decrease in current.